Development in numerical and experimental study of the multiple jets

The multiple jets is an important type of fluid flow with its application in various engineering fields and a highly complex turbulent flow due to the action of entrainment and mixing of the high speed flow.These phenomena were observed in number of previous investigations in theoretical,experimental and numerical studies,and some structural features and flowing mechanisms are revealed.In this paper,from the aspects of the numerical simulation and the experimental study,the present study methods and results are analyzed,and the forecasting ability of both the different turbulence models and various measuring ways are summarized.In the end,some unsettled issues are discussed and the developing directions in this field are also pointed out.